Adam of Usk was a man who lived a really long time ago in what is now Wales. He was a writer and historian who liked to write down everything he saw and heard.
Back then, there were lots of wars and battles going on between different groups of people. Adam wrote a lot about these wars and battles, and how they affected the people who lived there.
He also wrote about some very important events that happened in the country, like when a new king was crowned. People who read his writing could learn a lot about what was happening in the country at the time.
Adam wasn't just interested in politics and war though! He also liked to write about all the exciting things he saw while traveling around. He wrote about beautiful castles and churches, and even about people he met on his travels.
People still read Adam's writing today, because it gives us a really good idea of what life was like back then. It's like looking through a window into the past!